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1. |
Determine which equation represents a function. |
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A. |
x = 4 |
B. |
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C. |
y = -2x + 1 |
D. |
x = y2 - 1 |
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Hint |
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2. |
What is the x-intercept of the graph below? |
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A. |
-2 |
B. |
-3 |
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C. |
3 |
D. |
2 |
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Hint |
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3. |
The temperature f(x) of water in a lake in degrees Fahrenheit is estimated by the function shown below, where x is the depth in feet of the water. What would be the temperature of water 30 feet below the surface? |
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A. |
63°F |
B. |
33°F |
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C. |
71.25°F |
D. |
111°F |
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Hint |
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4. |
Determine the slope of the line that passes through the points at
(1, 5) and (-4, 0). |
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A. |
-1 |
B. |
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C. |
0 |
D. |
1 |
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Hint |
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5. |
A best-fit line drawn on a scatter plot ________ |
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A. |
always has a positive slope. |
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B. |
approximates the linear relationship of data points. |
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C. |
is a line that goes through every data point. |
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D. |
must be drawn through the first and last data points. |
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Hint |
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6. |
The table below shows the land-speed records to the nearest mile per hour. Draw a scatter plot for the data and use it to predict the approximate land-speed record for the year 2005. Assume the rate of increase of speed records remains the same. |
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A. |
830 mph |
B. |
980 mph |
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C. |
700 mph |
D. |
600 mph |
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Hint |
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7. |
Which equation describes graph A? |
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A. |
y = 2.25x - 1 |
B. |
y = 2.25| x | - 1 |
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C. |
y = | x - 1 | |
D. |
y = | 2.25x | |
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Hint |
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8. |
Consider the formula F(c) = 1.8c + 32, where c is the temperature in degrees Celsius and F(c) is the temperature in degrees Fahrenheit. If it is 0° C at the beginning of the day, and it is 11° C at noon, what was the change in temperature in degrees Fahrenheit? |
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A. |
51.8 |
B. |
11 |
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C. |
-12.2 |
D. |
19.8 |
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Hint |
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9. |
Graph the line through (2, 3) that is perpendicular to the line with equation 2x + 5y = 1. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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10. |
What is the slope of the line with equation  |
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A. |
-7 |
B. |
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C. |
7 |
D. |
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Hint |
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11. |
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in? |
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A. |
$217 |
B. |
$70 |
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C. |
$25 |
D. |
$50 |
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Hint |
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12. |
What type of function is shown in the graph? |
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A. |
constant function |
B. |
piecewise function |
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C. |
step function |
D. |
absolute value function |
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Hint |
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13. |
Which graph shows the inequality 5x – 2y  8? |
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A. |
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B. |
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C. |
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D. |
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Hint |
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14. |
Choose the ordered pair that satisfies 7x – 15y < -13. |
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A. |
(0, -2) |
B. |
(2, -3) |
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C. |
(-2, 0) |
D. |
(1, 1) |
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Hint |
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